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Re: how to I echo debugging remarks inside a function?

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On 04/10/2013 01:20 PM, Lew Pitcher wrote:
> On Wednesday 10 April 2013 14:28, in comp.os.linux.misc,
> Todd@invalid.invalid wrote:
>
>> On 04/10/2013 01:12 AM, Richard Kettlewell wrote:
>>> Lew Pitcher <lpitcher@teksavvy.com> writes:
>>>> Todd@invalid.invalid wrote:
>>>
>>>>> I want to echo debugging statements inside a function
>>>>> the returns its value as an echo.  But I do not want
>>>>> the debugging echo to be part of the return echo.  I want
>>>>> the debugging echo to go to the screen instead.
>>>>>
>>>>> #!/bin/bash
>>>>> abc () {
>>>>>       echo "I want this to go to the screen"
>>>>>       echo "This goes to the return string"
>>>>> }
>>>>> echo "-->$(abc)<--"
>>>>
>>>> To get text to appear on your terminal, no matter where stdout & stderr
>>>> are redirected to, redirect the required output to /dev/tty
>>>
>>> That’s a terrible idea, the process may not have a controlling terminal.
>>> The best places to send debug output are stderr or a logfile.  (See ‘set
>>> -x’ if you want precedent for using stderr.)
>>>
>>
>> Thank you!
>>
>> #!/bin/bash
>> abc () {
>>      echo "I want this to go to the screen" > "/dev/tty"
>>      echo "I want this to go to the screen too" > "/dev/stderr"
>>      echo "This goes to the return string"
>> }
>> echo "-->$(abc)<--"
>>
>>
>> $ ./EchoTest
>> I want this to go to the screen
>> I want this to go to the screen too
>> -->This goes to the return string<--
>
> But...
>    ./EchoTest 2>debug.log
> will only show
>    I want this to go to the screen
>    -->This goes to the return string<--
> and the line
>    I want this to go to the screen too
> will appear in the file ./debug.log
>
> Is this what you want?
>

Hi Lew,

I do not want it to go to a log file, just to the screen
and not be echoed as the function's return string.
The example I posted worked perfectly.

-T

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Thread

how to I echo debugging remarks inside a function? Todd <Todd@invalid.invalid> - 2013-04-09 19:33 -0700
  Re: how to I echo debugging remarks inside a function? Lew Pitcher <lpitcher@teksavvy.com> - 2013-04-09 22:46 -0400
    Re: how to I echo debugging remarks inside a function? Todd <Todd@invalid.invalid> - 2013-04-09 19:55 -0700
    Re: how to I echo debugging remarks inside a function? Richard Kettlewell <rjk@greenend.org.uk> - 2013-04-10 09:12 +0100
      Re: how to I echo debugging remarks inside a function? Todd <Todd@invalid.invalid> - 2013-04-10 11:28 -0700
        Re: how to I echo debugging remarks inside a function? Lew Pitcher <lpitcher@teksavvy.com> - 2013-04-10 16:20 -0400
          Re: how to I echo debugging remarks inside a function? Todd <Todd@invalid.invalid> - 2013-04-12 11:47 -0700
  Re: how to I echo debugging remarks inside a function? Todd <Todd@invalid.invalid> - 2013-04-09 19:49 -0700

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